/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 19:01:29,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 19:01:29,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 19:01:29,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 19:01:29,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 19:01:29,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 19:01:29,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 19:01:29,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 19:01:29,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 19:01:29,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 19:01:29,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 19:01:29,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-15 19:01:29,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 19:01:29,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 19:01:29,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 19:01:29,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 19:01:29,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 19:01:29,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 19:01:29,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 19:01:29,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 19:01:29,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 19:01:29,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 19:01:29,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 19:01:29,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 19:01:29,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-15 19:01:29,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-15 19:01:29,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-15 19:01:29,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-15 19:01:29,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-15 19:01:29,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-15 19:01:29,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-15 19:01:29,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-15 19:01:29,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-15 19:01:29,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-15 19:01:29,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-15 19:01:29,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-15 19:01:29,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-15 19:01:29,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-15 19:01:29,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 19:01:29,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 19:01:29,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 19:01:29,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf [2022-02-15 19:01:29,324 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 19:01:29,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 19:01:29,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 19:01:29,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 19:01:29,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 19:01:29,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 19:01:29,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 19:01:29,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 19:01:29,326 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 19:01:29,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 19:01:29,326 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 19:01:29,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 19:01:29,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 19:01:29,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 19:01:29,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 19:01:29,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 19:01:29,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 19:01:29,327 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 19:01:29,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 19:01:29,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 19:01:29,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 19:01:29,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 19:01:29,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 19:01:29,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 19:01:29,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 19:01:29,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 19:01:29,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 19:01:29,328 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-15 19:01:29,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 19:01:29,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 19:01:29,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 19:01:29,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 19:01:29,329 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 19:01:29,329 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-15 19:01:29,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 19:01:29,329 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-02-15 19:01:29,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 19:01:29,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 19:01:29,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 19:01:29,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 19:01:29,556 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-15 19:01:29,557 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-15 19:01:29,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl [2022-02-15 19:01:29,559 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl' [2022-02-15 19:01:29,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 19:01:29,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 19:01:29,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 19:01:29,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 19:01:29,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 19:01:29,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/1) ... [2022-02-15 19:01:29,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/1) ... [2022-02-15 19:01:29,607 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-15 19:01:29,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 19:01:29,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 19:01:29,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 19:01:29,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 19:01:29,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/1) ... [2022-02-15 19:01:29,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/1) ... [2022-02-15 19:01:29,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/1) ... [2022-02-15 19:01:29,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/1) ... [2022-02-15 19:01:29,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/1) ... [2022-02-15 19:01:29,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/1) ... [2022-02-15 19:01:29,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/1) ... [2022-02-15 19:01:29,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 19:01:29,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 19:01:29,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 19:01:29,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 19:01:29,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/1) ... [2022-02-15 19:01:29,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 19:01:29,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 19:01:29,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 19:01:29,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 19:01:29,680 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2022-02-15 19:01:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2022-02-15 19:01:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2022-02-15 19:01:29,681 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-02-15 19:01:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-15 19:01:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-15 19:01:29,681 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-15 19:01:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 19:01:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 19:01:29,682 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 19:01:29,717 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 19:01:29,718 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 19:01:29,773 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 19:01:29,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 19:01:29,780 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 19:01:29,783 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:01:29 BoogieIcfgContainer [2022-02-15 19:01:29,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 19:01:29,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 19:01:29,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 19:01:29,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 19:01:29,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 07:01:29" (1/2) ... [2022-02-15 19:01:29,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c3d31d and model type ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:01:29, skipping insertion in model container [2022-02-15 19:01:29,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:01:29" (2/2) ... [2022-02-15 19:01:29,790 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInForkedProcedure01.bpl [2022-02-15 19:01:29,793 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 19:01:29,794 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 19:01:29,794 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 19:01:29,794 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 19:01:29,821 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:01:29,823 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:01:29,830 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:01:29,833 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:01:29,834 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 19:01:29,838 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-15 19:01:29,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-15 19:01:29,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 19:01:29,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-15 19:01:29,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-15 19:01:29,928 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 19:01:29,935 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-15 19:01:29,935 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-15 19:01:29,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [fooErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION] === [2022-02-15 19:01:29,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 19:01:29,990 INFO L85 PathProgramCache]: Analyzing trace with hash 782458711, now seen corresponding path program 1 times [2022-02-15 19:01:29,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 19:01:29,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74489581] [2022-02-15 19:01:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 19:01:29,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 19:01:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 19:01:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 19:01:30,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 19:01:30,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74489581] [2022-02-15 19:01:30,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74489581] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 19:01:30,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 19:01:30,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 19:01:30,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352488892] [2022-02-15 19:01:30,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 19:01:30,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 19:01:30,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 19:01:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 19:01:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 19:01:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-15 19:01:30,200 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-15 19:01:30,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 19:01:30,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-15 19:01:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 19:01:30,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 19:01:30,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [fooErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION] === [2022-02-15 19:01:30,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 19:01:30,218 INFO L85 PathProgramCache]: Analyzing trace with hash 323194809, now seen corresponding path program 1 times [2022-02-15 19:01:30,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 19:01:30,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588505420] [2022-02-15 19:01:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 19:01:30,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 19:01:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-15 19:01:30,227 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-15 19:01:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-15 19:01:30,242 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-15 19:01:30,243 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-15 19:01:30,244 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-15 19:01:30,246 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-15 19:01:30,246 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-15 19:01:30,246 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooThread1of1ForFork1Err2INUSE_VIOLATION (0 of 4 remaining) [2022-02-15 19:01:30,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 19:01:30,252 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-15 19:01:30,255 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 19:01:30,255 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 19:01:30,264 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 07:01:30 BasicIcfg [2022-02-15 19:01:30,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 19:01:30,265 INFO L158 Benchmark]: Toolchain (without parser) took 680.58ms. Allocated memory was 191.9MB in the beginning and 264.2MB in the end (delta: 72.4MB). Free memory was 149.4MB in the beginning and 228.1MB in the end (delta: -78.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 19:01:30,265 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 19:01:30,266 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.94ms. Allocated memory is still 191.9MB. Free memory was 149.3MB in the beginning and 147.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 19:01:30,266 INFO L158 Benchmark]: Boogie Preprocessor took 13.22ms. Allocated memory is still 191.9MB. Free memory was 147.8MB in the beginning and 146.9MB in the end (delta: 925.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 19:01:30,267 INFO L158 Benchmark]: RCFGBuilder took 159.47ms. Allocated memory is still 191.9MB. Free memory was 146.9MB in the beginning and 138.7MB in the end (delta: 8.2MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-15 19:01:30,267 INFO L158 Benchmark]: TraceAbstraction took 479.01ms. Allocated memory was 191.9MB in the beginning and 264.2MB in the end (delta: 72.4MB). Free memory was 138.1MB in the beginning and 228.1MB in the end (delta: -89.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 19:01:30,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.94ms. Allocated memory is still 191.9MB. Free memory was 149.3MB in the beginning and 147.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.22ms. Allocated memory is still 191.9MB. Free memory was 147.8MB in the beginning and 146.9MB in the end (delta: 925.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 159.47ms. Allocated memory is still 191.9MB. Free memory was 146.9MB in the beginning and 138.7MB in the end (delta: 8.2MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 479.01ms. Allocated memory was 191.9MB in the beginning and 264.2MB in the end (delta: 72.4MB). Free memory was 138.1MB in the beginning and 228.1MB in the end (delta: -89.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 16, positive: 13, positive conditional: 13, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 13, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 13, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 8, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 13, positive: 13, positive conditional: 6, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 6, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 5, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13, positive: 3, positive conditional: 1, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10, unknown conditional: 5, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 10, Positive conditional cache size: 5, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 2, Maximal queried relation: 0, Independence queries for same thread: 3 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 23]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; VAL [x=0] [L18] 0 g := 0; VAL [g=0, x=0] [L20] FORK 0 fork 1 foo(x); VAL [g=0, n=0, x=0] [L29] FORK 1 fork 2 bar(n); VAL [g=0, n=0, n=0, x=0] [L30] 1 g := g + 1; VAL [g=1, n=0, n=0, x=0] [L36] 2 res := 23; VAL [g=1, n=0, n=0, res=23, x=0] [L21] JOIN 2 join 2; VAL [g=1, n=0, n=0, res=23, x=0] [L23] 0 assert g == 0; VAL [g=1, n=0, n=0, res=23, x=0] - UnprovableResult [Line: 26]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-15 19:01:30,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-15 19:01:30,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...